Reamer.



G. SLY.

BEAMER. APPLIUATIQN FILED 11211.24, 1911.

Patented 1160.121911.

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C. SLY.

BEAMER. APPLICATION FILED 11211.24, 1911.

Patented D615. 12, 1911.

2 SHEETS-SHEET 2.

CHARLES SLY, 0F CORPUS CHRISTI, TEXAS.

BEAMER.

Specification of Letters Patent.

Patented Dec. 12, 1911.

Application led April 24, 1911. Serial No. 622,996.

To all whom it may concern.'

Be it known that I, CHARLES SLY, a citizen of the United States,residing at Corpus Christi, in the county of Nueces and State of Texas,have invented certain new andv V useful Improvements in Beamers, ofwhich the following is a specication, reference being had to theaccompanying drawings.

This invention relates to an improved reamer and more particularly to adevice of this character which is adapted for reaming well drillingtubes such as are employed in drilling deep water or artesian wells.

The primary object of my invention resides in the provision of a reamerof the above character which is of simple construction, may be quicklyand easily inserted or removed from the drilling tube and is also highlyelicient in practical use.-

A further object of the invention is to provide means for easily andquickly cleaning out the 4interior of the reamer, one end of said reamerbeing so formed as to expand the upper end of the well drilling tubewhen removed therefrom.

A still further object of the invention is to provide a many sided bodyand a plurality of spring held pivoted dogs mounted in said body invertical series at each of the corners formed by the sides thereofwhereby a great number of tube engaging reaming members may be provided.

With the above and other objects'in view,

the invention consists of the novel featuresA of construction,combination and arrange' ment of parts hereinafter fully described andclaimed, and illustrated in the Vaccompanying drawings, in which- Figure1 is a side elevation of a reamer constructed in accordance with myinvention; Fig. 2 is a top plan view thereof; Fig. 3 is a verticalsection taken on the line 3-3 of Fig. 2; Fig. 4t is a detail sectiontaken on the line 4-4 of Fig. 3; and Fig. 5 is a detail perspective viewof one of the pivoted dogs.

Referring more particularly to the drawings 5 indicates the hexagonalbody of the reamer. A plurality of vertical partition plates 6 aresecured to said body adjacent to each of its corners and extend inwardlyto form a central hub portion 7. The upper end of the body is formedwith a tapered extension 8 which is screw threaded whereby the reamermay be connected to any well known form of operation machine. The lowerend of the reamer body is also slightly -spring17 is secured to theshell tapered and rounded as shown at 9. A longitudinal opening 10 isformed through the i central hub portion of the reamer body and isclosed at its lower end by a threaded plug 11.

mounted within the body at each of the corners thereof, the hexagonalshell comprising l said body being provided at its corners with i spacedlongitudinal openings 13. Thesf f openings are rectangular in form asshov f in Fig. 1. The dogs 12 are pivoted upon l vertical series of pinsllt which are 'secured f in each of the radially extending plates 6.

i As shown in detail in Fig. 5 the dogs 12 are 1 formed with therecesses 15 and the lips 16 adjacent to said recesses. A heavy leaf bodybetween the openings 13 therein. The free ends of these springs extendinto the recesses 15 in the dogs and normally tend to force the curvedouter ends 18 of said dogs outwardly. The inner ends of the dogs 'beyondVthe lips 15 are formed with a shoulder 19. This shoulder is adapted toengage with thp upper end of a vertically disposed stop cle 20 which issecured to theplate 7. The fo A plurality of dogs 12 are pivotally wardmovement of the dogs is limited by the n engagement of the lips 16 withthe beveled surfaces 20 formed on the upper ends of said cleats.

In the operation of my improved reamer, the tapered rounded end 9thereof is first inserted into the upper end of the drill tube.Afterflthe reamer has been lowered in thr tube to the proper position,the same is r tated by the operating machine and the e. gagement of theouter curved edges of the pivoted dogs 12 with the inner surfaces of thedrill tube will cleanly removev all accumulations and incrustations.

In Fig. 3 of the drawings the well drilling tube is shown in dottedlines, and all of the dogs 12 with the exception of those at the upperend of the reaming tube, are disposed below the lower end of the drilltube. It will thus be seen that when the reamer is in position withinthe tube, the dogs are forced inwardly against the tension of the springblades 17 said springsvforcibly holding the 105 and permit of the easieroperation of the drill. When the reaming tube is moved upwardly, theengagement of the curved outer edges with the lower end of the tubewill, force the dogs inwardly and scrape any vdirt or other materialfrom their curved scraping edges 18.

From the foregoing it is believed that the construction and operation ofmy improved reaming tube will be readily understood withoutnecessitating any further description. construction and extremelyeicient in practical operation. The parts are of simple form and owingto the construction of the reamer body, in the event that any one of thescraping dogs should become broken it may be readily removed and anothersubstituted therefor. The dogs are preferably formed from hardenedsteel, but it will be obvious that if desired any other material may beemployed. It will also be understood that any desired number of theradial series of dogs may be employed and the invention is notrestricted to the exact arrangement thereof as shown in the drawings.

The device is also susceptible of a great number of other minormodifications without materially departing from the essential feature orsacrificing any of the advant-ages thereof.

Having thus described the invention what is claimed is l. A reamercomprising a hexagonal body, a plate secured at one of its longitudinaledges adjacent to each of the corners of the body and extending inwardlytherefrom, a plurality of dogs pivoted upon each of said plates andextending through openings in the body, a plurality of springs securedto each corner of the body, said dogs having recesses therein to receivethe springs, said The device is strong and durable in springs beingadapted to force the scraping edges of said dogs outwardly from theopenings, lips formed upon the dogs, shoulders on the inner ends of thedogs, and stops arranged upon said plates for engagement by said lipsand shoulders to limit the pivotal movement of the dogs.

2. A reamer comprising a hexagonal shell, a central hub arranged in theshell, a plurality of radiating plates carried by said hub and securedat their outer edges to the shell adjacent to its corners, a verticalseries of dogs pivoted upon each of the plates, said shell havingopenings at its corners through which the dogs extend, means secured tothe shell normally forcing said dogs outwardly' through said openings,and means arranged in the body for limiting the pivotal movement of thedogs. i

8. A reamer comprising a hexagonal shell, a central cylindrical hubprovided with longitudinal bore arranged in the shell and a plug closingthe lower end of the bore, a plurality of plates radiating from the hub,the outer edges of said plates being secured to the shell adjacent toits corners, a vertical series of dogs pivotally mounted upon each ofthe plates, said shell having openings at its corners through which thedogs extend.. means for yieldingly holding the dogs against inwardmovement, and means arranged on said plates for limiting the pivotalmovement of said dogs in either direction.

In testimony whereof I hereunto aiiix my signature in the presence oftwo witnesses.

CHARLES SLY. lVt-nesses G. H. JOHNSON, GERTRUDE EGAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

